Oil & gas wells in Mercer County, PA
4,790 catalogued wells in Mercer County, Pennsylvania, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Mercer County, Pennsylvania has 4,790 catalogued oil & gas wells: 3,060 active (64%), 417 plugged & abandoned (9%) and 207 documented orphans. It ranks 17th of the 37 Pennsylvania counties WellCensus profiles by well count and holds 2% of the state's 224,189 catalogued wells.
Catalogued wells
4,790
Active
3,060
Plugged
417
Documented orphans
207
What is the status of oil and gas wells in Mercer County?
64% of Mercer County's wells are active, 18 percentage points above the Pennsylvania share of 45%. 9% are plugged & abandoned, against 25% statewide and 47% nationally. 207 wells (4%) are documented orphans with no operator able to plug them, compared with 12% across Pennsylvania and 4% nationally. The remaining 1,106 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Mercer County?
By product class, 2,101 of the county's wells (44%) are oil wells, 2,449 (51%) gas wells and 69 (1%) injection wells. Statewide the oil share is 37% and the gas share 51%. 100% of the county's wells carry coordinates and appear on the map.
How does Mercer County compare with other Pennsylvania counties?
Mercer County has the 17th-most catalogued wells of the 37 Pennsylvania counties with at least 25. The median Pennsylvania county on WellCensus has 4,066 wells. The largest, McKean County, has 38,160. By documented orphans it ranks 20th in Pennsylvania.
Who operates wells in Mercer County?
151 distinct operators of record are linked to wells in Mercer County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.
Wells in Mercer County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Parks 3 | 37-085-00032 | Orphaned | Other type | Pa Dep Ofc Oil & Gas Mgmt |
| Parks 1 | 37-085-00033 | Orphaned | Other type | Pa Dep Ofc Oil & Gas Mgmt |
| W. Courtney 1 | 37-085-00040 | Plugged & abandoned | Other type | Peoples Natural Gas Co LLC |
| P.R. Mccauslin 1 | 37-085-00047 | Active | Gas | Steckler Mary |
| Serial # 4932 4932 | 37-085-00051 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 4969 4969 | 37-085-00052 | Plugged & abandoned | Injection | Natl Fuel Gas Supply Corp |
| Will Jack 5539 | 37-085-00053 | Active | Injection | Natl Fuel Gas Supply Corp |
| C L Amon 5573 | 37-085-00054 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 5578 5578 | 37-085-00055 | Plugged & abandoned | Injection | Natl Fuel Gas Supply Corp |
| Serial # 5579 5579 | 37-085-00056 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 622 622 | 37-085-00058 | Plugged & abandoned | Injection | Natl Fuel Gas Supply Corp |
| S. Buckley 626 | 37-085-00059 | Active | Injection | Natl Fuel Gas Supply Corp |
| Samuel Sparks 627 | 37-085-00060 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 628 628 | 37-085-00061 | Active | Injection | Natl Fuel Gas Supply Corp |
| F. M. Struble 644 | 37-085-00062 | Active | Injection | Natl Fuel Gas Supply Corp |
| Isaac Gadsby 658 | 37-085-00064 | Active | Injection | Natl Fuel Gas Supply Corp |
| Archie Marshall 661 | 37-085-00065 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 662 662 | 37-085-00066 | Active | Injection | Natl Fuel Gas Supply Corp |
| J. L. Patterson 663 | 37-085-00067 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 696 696 | 37-085-00068 | Active | Injection | Natl Fuel Gas Supply Corp |
| F. M. Struble 783 | 37-085-00069 | Active | Injection | Natl Fuel Gas Supply Corp |
| Elizabeth Humphrey 798 | 37-085-00070 | Active | Other type | Natl Fuel Gas Supply Corp |
| Serial # 800 800 | 37-085-00071 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 802 802 | 37-085-00072 | Active | Injection | Natl Fuel Gas Supply Corp |
| Serial # 816 816 | 37-085-00073 | Active | Injection | Natl Fuel Gas Supply Corp |
A sample of the county’s wells — every catalogued well has its own page. Browse all 4,790 in search → (filter by operator, status and type, then export), or find a specific well on the live map.
Frequently asked questions
How many oil and gas wells are in Mercer County, PA?
Mercer County, Pennsylvania has 4,790 catalogued oil & gas wells: 3,060 active, 417 plugged and 207 documented orphans.
How many orphaned wells are in Mercer County?
207 wells in Mercer County, Pennsylvania are documented orphans — unplugged with no solvent operator of record, the 20th-highest count among Pennsylvania counties.
What share of wells in Mercer County are plugged?
417 of Mercer County's 4,790 catalogued wells (9%) are plugged & abandoned, compared with 25% across Pennsylvania.
Which Pennsylvania county has the most oil and gas wells?
McKean County has the most catalogued wells of any Pennsylvania county on WellCensus (38,160); Mercer County ranks 17th with 4,790.
How many companies operate wells in Mercer County?
151 distinct operators of record are linked to catalogued wells in Mercer County, Pennsylvania.
Nearby in the Pennsylvania rankings
About this data
Source: Pennsylvania DEP well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Oil & gas wells in Mercer County, Pennsylvania”, https://wellcensus.com/wells/pennsylvania/mercer (data as of October 10, 2026).